http://www.financialexpress.com/news/Why-it-s-the-relatively-wealthy-who-spread-Ebola/1278849
Many many more Nigerians can afford to bug out if things deteriorate there.
more info
Shocking moment runaway Ebola patient is bundled into back of Monrovia ambulance after causing panic at local market when he turned up looking for food (article and video at link)